Question

how can you add this-
1+2+3+.............upto 100​

Answer 1

Answer:

Sn = n/2 (2a+(n-1).d)........

Answer 2

Answer:

Sn=n/2 {2a+(n-1).d}

solve using this formula

u will get ur ans...

Hope helps uh MATE

if si

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